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© 2018 StewMac
This circuit is built on two eyelet
boards: the large main board and a
smaller one called the bias board . For
each of these, there’s an additional
blank insulator board of the same size .
These insulators mount behind the
eyelet boards to prevent the com-
ponents from contacting the metal
chassis .
Each pair of boards will mount to the
chassis with two machine screws .
The first step in preparing these
boards is to drill mounting holes
through the blank insulators .
Prepping the eyelet boards
STEP 8
Drill the insulator boards
Noting the eyelet holes, orient the
boards as shown above . Align each
eyelet board with its insulator and
tape them together .
The mounting holes are pre-drilled
in the main eyelet board, but not in
its insulator board . Drill through the
holes indicated using a 5/32" drill
bit . Separate the boards and set the
insulator board aside for later .
The smaller bias board does not have
pre-drilled mounting holes . Place it
in the chassis as shown . Holding the
board in position, turn the chassis
over to see the mounting holes .
With a sharp pencil, mark the two
hole locations onto the insulator
board . Drill two 5/32" mounting holes
through this pair of boards . Set the
insulator board aside for later .
You'll drill the mounting holes in the bias board.
In the main board, they're already drilled.
Insulator
Summary of Contents for 65 P-REVERB
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